JVC Model 200 service manual Front/Rear or Inverted Projection Jumper Settings

Chapter 3---Service Adjustments

damaging the connector, grasp the ILA® assembly itself, not the connector at the top.

4.If the overlap is at the top or bottom, be sure the projector is level, then slide the spring clip (Figure 4-12) at the top of the ILA® assembly backward and remove the ILA® assembly (it will slide out with some resistance). There are two adjustment screws at the bottom of the ILA® assembly which allow for up and down movement. Turn these screws in or out very slightly to allow the ILA® to seat lower or higher, whichever is needed.

5.Reinstall the ILA® assembly and replace the spring clip.

6.Repeat Step 4 if adjustment is still needed.

7.Retighten the 2 wing nuts.

8.Reset the ILA® biases to their previous levels from Step 2.

3.9Front/Rear or Inverted Projection Jumper Settings

3.9.1Front/Rear Jumper Setting (Horizontal Reverse)

The Horizontal Scan Reversal Jumper reverses the image projection for front or rear projection. Figure 3-7 illustrates the jumpers’ location on the Scan Reversal Board, and the proper location for front and rear projection.

The projector is shipped with the jumper plugs inserted in J50 and J100 for front projection. For a rear projection setup, these jumpers must be inserted into JA50 and J101.

HORIZ SIZE COILS

Figure 3-7.Scan Reversal Board.

To set the Horizontal Scan Jumper:

1. Turn power off at the projector and wait for the arc lamp to cool.

Model 200 Service Manual 3-11